Abstract
Myelinolysis occurs following rapid correction of hyponatremia in both humans and experimental animals. Although the mechanism of this effect at present is unknown, we have examined the possibility that a rapid rise in serum sodium following hyponatremia potentiates an oxidative stress and results in the oxidation of cellular proteins. In these studies, rats treated with 1 M NaCl following 3 days of vasopressin-induced hyponatremia exhibited myelinolysis in the corpus striatum and thalamus as well as significant increases in soluble oxidized proteins in the brain. These changes did not occur in rats treated with 0.155 M (0.9%) NaCl following 3 days of hyponatremia.
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